The Trump administration has not taken anything "off the table," including the use of tactical nuclear weapons, if it decides to take military action against the underground Iranian nuclear facility at Fordow,

US President Donald Trump signaled he would give diplomacy a chance before deciding whether to strike Iran, dialing back on recent comments that suggested military action could be imminent.

The White House says Trump will decide whether to attack Iran within two weeks because there is a "substantial chance of negotiations". Also: why killing a Lithuanian bear outraged hunters, and the search to name storms.